System of feeding treated water to boilers.



J. H. COOPER. SYSTEM OF FEEDING TREATED WATER TO BOILERS. APPLIOATIONFILED MAR. 13,1911.

1,050,.6 1 6. Patented Jan. 14, 1913.

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I J. H. COOPER, SYSTEM OF FEEDING TREATED WATER T0 BOILERS. APPLICATIONFILED 111111.13, 1911.

1,050,616. Patented Jan. 14, 1913;

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APPLICATION FILED MARJG, 1911.

Patented Jan. 14, 1913.

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UNITED STATES PATENT oEEIoE.

irosEPH H. COOPER, 0E PAOLA, KANSAS.

SYSTEM OF FEEDING TREATED WATER TO BOILERS.

To all whom it may concern:

Be it known that I, JOSEPH I'I. COOPER, a citizen of the United. States,and a resident of Paola, Miami county, Kansas, have invented certain newand useful Improvements in Systems of Feeding Treated Water to Boilers,of which the following is a clear, true, and exact description, 'such aswill enable others skilled in the art to which it appertains to make anduse the same.

My invention relates to improvements in injectors and has particularreference to means for adding or feeding chemicals to boilerfeed waterproportionately to the quantity of water forced into the boiler.

The object of my invention is to automatically feed untreated water andboiler compound or water treating material simultaneously in desiredproportions from separate sources or tanks to a steam boiler through asingle boiler connection.

A further object of my invention is to provide a novel apparatus incombination with a feed water injector for automatically cont-rollingthe feeding of water-treating compound in liquid form to the suction endof the injector in consonance with the operation of the injector.

A further object of my invention is to provide means in combination witha number of feed water injectors whereby chemicals in liquid form willbe automatically fed in a predetermined proportion, from a single sourceof supply, to the respective supply pipe of any of the injectors whichmay be in operation.

My invention consists in the novel combinations and arrangements ofmechanisms and parts whereby the above objects are attained togetherwith others hereinafter appearing and all as fully described herein andparticularly pointed out in the appended claims.

My invention will be more readily understood by reference to theaccompanying drawings,.forming a part of this specification, and inwhich:

Figure 1 is a partial side elevation of a locomotive equipped with acombination feed water and chemical injecting apparatus embodying myinvention; Fig. 2 is an end Specification of Letters Patent.

Application filed March 13, 1911.

Patented Jan. 14,1913.

Serial No. 614,198.

elevation of the locomotive showing the two injectors, one on each sidethereof; Fig. 3 is an enlarged longitudinal sectional view of thecombined feed water and liquid chemical injector; and Fig. 4: is anenlarged sectional view of the liquid controlling valve similar to theview shown in Fig. 3 except that the valve is in operating or openposition.

My invention is capable of embodiment in structures arranged indifferent combinations for performing different functions relative tothe treatment of feed water. I have, however, confined the illustrationof my invention to an apparatus particularly adapted for the feeding ofa chemical, in liquid form, to the suction pipes of injectors, but Idesire it to be understood that my invention is not thus limited.

It will be understood that my invention is applicable to a stationaryboiler, or to any situation in which it is desired to feed water andwater-treating material to a containing vessel from separate sourcesthrough a single connection to the container. But I have confined theillustration of the application of the invention to a locomotive for thereason that the advantages inherent in the invention apply moreparticularly to locomotive practice on account of the apparent necessityof constantly using treated water in locomotive boilers, partly due tothe practice of forcing them to their highest production of steam, andpartly due to the difficulty of obtaining boiler feed water forlocomotives which is free from deleterious substances.

In this specification I make use of the term treated water as signifyingwater to which a water-treating material has been added with the ideathat the treated water is not necessarily chemically combined with thetreating material; in other words, treated water, as herein used, meansuntreated water to which any material is added for the purpose ofaffecting the nature, condition or action either simultaneously with theaddition of the material, or later when the water is made use of in aboiler or otherwise.

A particular advantage of my invention resides in its economy of thewater-treating material, for instead of adding the watertreating.material to the whole of the water in the water supply tank, and therebylosing the proportion of treating material contained in whateverquantity of water may be lost, I add the water treating material to thewater as the water passes to the boiler feed device, and consequently Iam assured that the water treating material is conserved and all of itis made use of.

In said drawings, A indicates a locomotive boiler, and B the tender,having a water tank or reservoir C. The boiler is provided with twoinjectors 3 and 1,'arranged respectively on the left and right handsides of the boiler within the cab, and located above the normal waterline D of the tank C. Each of the injectors illustrated comprises acompound adjustable steam nozzle 5, suitably mounted Within the casing6, which is provided with a feed water connection or suction end 7, asteam connection 8 and a feed water delivery end 9. The suction end ofthe injector 3 is connected with the bottom of the tank C by means ofthe water supply pipe 10. The steam supply connection 8 is connectedwit-l1 the steam space of the locomotive boiler by the valved steam pipe11, and the delivery end 9 is connected to the forward end of the boilerbythe boiler teed .pipe 12. The injector 4: is similarly connected withthe boiler and is connected with the tank by means of the feed watersupply pipe 13. The injector is provided with a starting or operatinglever 3 linked to the longitudinally movable valve rod 5 by means ofwhich steam can be admitted to the injector to cause it to operate. Thenozzle 5 is mounted upon the inner end of the rod 5 and comprises theouter member 5 movable with the rod 5 and the inner member 5 which has alost motion connection with the member 5 whereby the first movement ofthe lever 3' operates to admit steam to the interior of the inner member5 for the purpose of producing an initial vacuum and thereby raising thewater in the supply pipe 10 up into the injector. hen this has occurreda further movement of the lever 3 withdraws the inner nozzle 5 from itsseat and steam is permitted to pass through the injector around theouter surface of the inner nozzle 5, thereby admitting su-ificient steamto force the water through the injector and the feed pipe 12 into theboiler.

As stated, the first action of the steam is to produce a vacuum in theinlet or suction chamber 15 of the injector and this vacuum or suctionaction is maintained during the action or operation of the injector. Theinlet or suction end of the injector is provided with a valve 16 bymeans of which the supply of water to the injector may be regulated. Theinjector is also provided with an overflow connection 17 through whichthe water can escape from the injector when for any reason the injectordoes not force the water into the boiler. This overflow connection isalso provided with a hand valve 18, by means of which it can beregulated. The delivery end of the injector is provided with a checkvalve 19 and the feed pipe 12 is provided with a check valve 20 where itconnects with the boiler. These check valves act in the usual manner toprevent the escape of water or steam from the boiler backward throughthe feed pipe 12 and through the injector. I feed or supplv thewater-treating material to the feed water as the feed water passes fromthe tank C to the injector, and I make use of the vacuum produced by theinjector or, in other words, the suction action of the injector tocontrol the How of the water treating material, and also to cause it tobe fed to the feed water connection of the injector. I preferably usethe water treating material in liquid form and I provide a tank 21,mounted upon the boiler within the cab, for the purpose of containingthe necessary liquid. I connect this tank with the feed waterconnections 10 and 13 by means of a feed pipe 22 and in this pipe Iprovide a valve 23 by means of which I can control the flow of thewater-treating liquid. This valve 23 is preferably located, as toheight,

below the injectors 3 and 4: and above the normal water level D of thetank C.

Below the valve 23 the liquid supply pipe 22 divides into two branches,21 and 25, which are connected respectively to the supply pipes 10 and13, preferably at their lowest points. The pipe 22 is provided with anordinary stop valve 26, adjacent to the tank 21, by means of which theflow of chemical can be shut off completely when desired.

In locomotive practice, it desirable that the necessary or requiredduties of the fireman and engineer be reduced rather than added to and,while it is obvious that the flow of the liquid from the tank 21 to thefeed pipes of the injectors might be controlled by hand through themedium of the valve. 26, it is not desirable to add the care of thismatter to the duties of the engineer or fireman. I have, therefore,arranged the valve 23 in such a manner that the flow of the liquid fromthe tank 21 to the feed pipes shall be controlled automatically with thestarting and stopping of the injectors and, in the application of myinvention illus trated in the drawings, I make use of the vacuum orsuction action of the injector to thus automatically control the valve23. This valve comprises a casing 27, having a cylindrical chamber 28 atone end, and a smaller cylindrical chamber 29 at the other end. Thechamber 28 contains a piston 30 and the chamber 29 contains acylindrical piston valve 31. The piston 30 and the valve 31 are mountedon opposite ends of a piston rod 32 by means of which any movement ofthe piston 30 is communicated to the valve 31. The cylinder 29 acts as apassage for the water-treating liquid and the piston valve 31 controlsthis passage. I provide an adjustable needle valve 33, immediately abovethe casing 27, by which the flow of liquid from the tank 21 can beadjusted to the desired proportion with the quantity of water fed by theinjector to the boiler, and consequently whenever the piston valve 31permits the flow of liquid the liquid will be supplied at a certainpredetermined and definite rate. The valve 31 is maintained in itsclosed position by means of the compression spring 34 mounted within thecylinder 28 and which operates to hold the piston 30 at the outer limitof its movement. I connect the cylinder 28 with the suction end 7 of theinjector 3 by means of a pipe 35 and thereby when the injector isstarted into operation the vacuum or suction action thereof tends toexhaust the inner end of the cylinder 28 or form a vacuum therein andair pressure entering the cylinder through the vent 36 in the head 37forces the piston, and consequently the valve 31, to the other limit ofits movement. As this vacuum is maintained during the time that theinjector is in operation the valve 31 is held in its open position andpermits the water-treating fluid to flow from the tank 21 to the feedwater connection of the injector. If there were but one injector, theconnections and action, as described, would be sufiicient, but inlocomotive practice, for purposes of safety, it is usual to provide twoinjectors, as already described, and, while I might provide two tankscontaining water-treating liquid, one connected to each of the injectorsand to its supply pipe, I prefer to supply a single tank and connect itto each of the injectors and their supply pipes and arrange theconnections in-such a manner that when either of the injectors is inoperation the watertreating liquid will be supplied to its feed waterpipe. To accomplish the above I connect the cylinder 28 of the valve 23with the suction end of each of the injectors, dividing the vacuum pipe35 into two branches, 37 and 38, and connecting them respectively to thesuction ends of the injectors 3 and 4.

.These pipes 37 and 38 are each provided with check valves 39 and 40,respectively, arranged adjacent to the connection of these pipes wit-h.the pipe 35. When the injector 3 is put into operation the vacuumproduced thereby tends to close the valve 40 in the pipe 38 whichconnects With the injector 4,

and reversely the valve 39 is closed by the action of the injector 4.The action as described serves to open the valve 23 when either of theinjectors is put into operation and to maintain it thus open during theoperation of either injector.

To cause the water-treating liquid to flow to the supply pipe of theinjector which is maintaining the valve 23 in open condition,

I provide check valves 41 and 42 which respectively control the flow ofliquid through the liquid supply pipes 24 and 25. These valves arepreferably What are known as vertical check valves and are arranged insuch a manner that they are held open by gravity and close against anupper seat, consequently the suction action of the injector upon itsrespective feed pipe acts through its liquid feed pipe and raises thecheck valve in the liquid feed pipe leading to the opposite injectorstopping the fiow of the liquid to the injector which is not inoperation. This construction permits the flow of the liquid to eitherinjector which may be in operation, or to both of them, if they shouldbe operating simultaneously. It will now be seen that once havingadjusted the needle valve 33 and opened the hand valve 26 the flow ofthe water-treating liquid is controlled automatically by the startingand the stopping of either of the injectors and also that the control issuch that the liquid does not flow to either of the injectors when theyare not operating. Therefore, the water-treating liquid is conserved andonly that quantity is used which is necessary to treat the wateractually passing from the feed water tank to the injector.

As many modifications of my invention will readily suggest themselves toone skilled in the art, I do not confine or limit my invention to thespecific structures or combinations of parts constituting the feedingsystem, for water and Water-treating material, as herein described.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. A system of feeding treated water to a boiler comprising, a boiler, asupply of untreated water, a supply of water treating material, a waterfeed connection between said water supply and said boiler, a watertreating material connection between the supply thereof and said waterfeed connection, means interposed in said water feed connection betweenthe water treating material connection and the boiler for feeding theWater and water treating material to the boiler, means for controllingthe operation of said feeding means, and means automatically andpneumatically operable in conjunction with said controlling means forcontrolling the flow of Water treating material to said Water feedconnection, substantially as described.

2. A system of feeding treated water to a boiler, comprising a waterreservoir or tank, a tank containing water treating liquid, a watersupply pipe connecting the water tank With the boiler, a boiler feeddevice interposed in said pipe, a liquid supply pipe connecting saidliquid tank with the water supply pipe between the water tank and theboiler feed device, cont-rolling means for starting and stopping saidboiler feed device, a normally closed pneumatically controlled valve insaid liquid supply pipe, and means connecting said valve with saidboiler feed device adapted to maintain said valve open and permit theflow of liquid to the water feed pipe when the boiler feed device is inoperation.

3. A system of feeding treated water to a boiler comprising a waterreservoir, a tank of water treating chemical situated above the normalwater line of said water reservoir, a connection between said waterreservoir and said boiler, a suction feed water injector interposed insaid connection, and situated above said water line, a liquid chemicalsupply pipe connecting said tank with said connection between thereservoir and the injector, a piston valve controlling the flow ofliquid through said pipe, a cylinder in alinement with said pistonvalve, a piston movable in said cylinder connected to said valve andcontrolling its position, means normally holding said piston at onelimit of its movement and thereby holding said valve in its closedposit-ion, and a con nection between said cylinder and the suction endof said injector.

4. A system of feeding treated water to a boiler from separate suppliesof untreated water and water treating solution through a singleconnection to the boiler, comprising a water tank, a solution tank, afeed water injector, connection between the water tank and injector,connection between the injector and the boiler, connection between thesolution tank and the feed water connection, a

piston valve in said feed water connection, a

cylinder in alinement with said valve, a piston movable in said cylinderand connected wit-h said valve, means normally holding said piston atthe outer limit of its movement and thereby holding said valve in closedposition, and a connection between the inner end of the cylinder and thesuction end of the injector.

5. A system of feeding treated water to a boiler comprising a watertank, a solution tank, a boiler feed device having a suction end and adelivery end, connection between the delivery end and the boiler, waterfeed connection between the suction end and the Water tank, a solutionfeed connection between the solution tank and the water feed connection,a pressure operated valve controlling the fiow of the solution,connection between the valve and the suction end of the boiler feederwhereby the suction action of the feeder operates to maintain the valvein open position when the feeder is in operation, substantially asdescribed.

6. A system of feeding treated water to a boiler, comprising a watertank, a solution tank, a boiler feed device having a suction end and adelivery end, a connection between the delivery end and the boiler, awater feed connection between the suction end and the water tank, asolution feed connection between the solution tank and the water feedconnection, an automatically operated valve interposed in said solutionfeed connection, said valve comprising a piston valve controlling theflow of solution through said solution feed connection, a cylinder inalinement with said valve, a piston in said cylinder connected to saidpiston valve and controlling its position, resilient means maintainingthe piston at the outer limit of its-movement and the valve closed, anopening in the outer end of the cylinder to admit atmospheric pressure,and a. pipe connecting the inner end of the cylinder to the suction endof the boiler feed device.

7. A steam boiler in combination with a combined feed water and liquidchemical injecting system, comprising a pair of feed water injectors,each thereof having communication with a source of supply of water, anda source of supply of steam, a delivery connection connecting each ofsaid injectors to said boiler, operating means for starting and stoppingsaid injectors, a source of supply of liquid chemical communicating withthe supply ends of said injectors, and means connected with the intakeconnections of said injectors automatically and pneumatically operableby the starting and stopping of each of said injectors for controllingthe supply of liquid chemical thereto.

8. A steam boiler, in combination with a combined feed water and liquidchemical injecting system, comprising a pair of feed water injectors,each thereof having communication with a source of supply of feed waterand a source of supply of steam, a delivery connection for each of saidinjectors connecting the delivery end of each thereof with said boiler,a single source of supply of liquid chemical, a single chemical supplypipe communicating with said source and branching to the supply ends ofeach of said feed water injectors, a valve in said chemical supply pipe,and means automatically and pneumatically operable by the operation ofeach of said injectors controlling the flow of liquid respectivelythereto.

9. A steam boiler, in combination with a combined feed water and liquidchemical inject-ing system, comprising a pair of feed water injectors,each thereof having communication with a source of supply of feed waterand a source of supply of steam, a delivery connection for each of saidinjectors connecting the delivery end of each thereof with said boiler,a single source of supply of liquid chemical, a single chemical supplypipe leading from said source and branching to the suction ends of eachof said injectors, a normally closed valve in said pipe controlling thesupply of liquid chemical to each of said injectors, means connectingsaid valve with each of said injectors and automatically operating toopen said valve when one of said injectors is started and to hold itopen during the operation of either of said injectors, a normally opencheck valve in each of said branches adapted to be closed by the feedsuction of the opposite injector.

10. A system of feeding treated water to a boiler comprising two feedwater injectors, a water reservoir, a liquid chemical tank, connectionbetween each of said injectors and said reservoir, connection betweeneach of said injectors and said boiler, a chemical supply pipe leadingfrom said tank and branching to each of said feed water connections, anormally closed valve in said chemical supply pipe controlling the flowof the chemical, means connecting said valve with each of saidinjectors, whereby said valve is opened during the operation of eitherof said injectors to permit the flow of chemical to the feed waterconnections, a normally open valve controlling each of said branchesadapted to be closed by the suction of the opposite injector.

11. A system of feeding treated water to a boiler comprising a source ofwater supply, an injector for feeding water to the boiler and a chemicaltank, a pipe leading from said source of water supply to the suction endof said injector, a pipe leading from the discharge end of said injectorto the boiler, a chemical supply pipe having communication with thechemical tank and the suction end of said injector, the flow of chemicalthrough said chemical supply pipe being controlled by the vacuumproduced in the suction end of the injector, starting when the injectoris put into operation and stopping when the operation of the injector isstopped.

12. A. system of feeding treated water to a boiler comprising a sourceof water supply, means for feeding water to the boiler and a chemicaltank, said water feeding means having a suction end and a delivery end,said source of water supply communicating with the suction end of saidwater feeding means, the delivery end of said water feeding meanscommunicating with the boiler, a chemical supply pipe havingcommunication with the chemical tank and the suction end of said waterfeeding means, the flow of chemical through said chemical supply pipetoward the water feeding means being controlled by the vacuum producedin the suction end of said water feeding means, starting when the waterfeeding means is put into operation and stopping when the operation ofthe water feeding means is stopped.

13. In a system of feeding treated water to a boiler, a source of watersupply, a chemical tank, an injector, a pipe leading from the source ofwater supply to the suction end of said injector, a pipe leading fromthe de livery end of said injector to the boiler, a chemical supply pipeleading from the chemical tank and communicating with the suction end ofsaid injector, and a pneumatically controlled valve in said chemicalsupply pipe adapted to allow the chemical to pass therethrough when theinjector is, in operation, and to prevent the passage of chemicaltherethrough when the operation of the injector is stopped.

14. In a system of feeding treated water to a boiler, a source of watersupply, a tank to contain the water treating material, means for feedingwater to the boiler, said water feeding means having a suction end and adelivery end, a pipe leading from the water supply to the suction end ofsaid water feeding means, a pipe leading from the delivery end to theboiler, the supply pipe leading from the tank of water treating materialand communicating with the suction end of said water feeding means, anda pneumatically controlled valve in said supply pipe to allow thepassage of water treating material therethrough when'the water feedingmeans is in operation and to prevent the passage of water treatingmaterial there- .through when the operation of the water feeding meansis stopped.

15. A system of feeding treated water to a boiler comprising a source ofwater supply, a chemical tank, an injector for feeding water to theboiler, a pipe leading from said water supply to the suction end of saidinjector, and a pipe leading from the delivery end of the injector tothe boiler, a chemical supply pipe affording communication between thechemical tank and the suction end of said injector, pneumaticallycontrolled means whereby chemical is allowed to pass through saidchemical supply pipe when the injector is in operation, and a manuallyoperated valve in said chemical supply pipe.

16. In combination, two injectors, each having its suction endcommunicating with a source of water supply and its delivery endcommunicating with a boiler, a tank to contain water treating material,a pipe to convey water treating material provided With a pneumaticallycontrolled valve to In testimony whereof, I have hereunto set allow thepassage of Water treating material my hand, this 17th day of February,1911, in 10 therethrough When one or both of the inthe presence of twosubscribing Witnesses. jectors is in operation, and a pi e leadin fromthe suction end of each of s aid injec JOSEPH 0001 tors to said valve,and check valves in each Vitnesses:

of said last-mentioned pipes, substantially JOHN R. LEFEVRE,

as described. CHARLES GILBERT HAWLEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

' Washington, D. C.

